Advisory for the month of June 2019

A.   For harvested rabi onion and garlic

1.     Shade curing of harvested onion bulbs for 10-12 days is advised before storage.

2.     Properly cleaned onion bulbs, free from cuts and bruises are better for storage.

3.     Adopt bottom and side ventilated storage structures.  Bulbs should be spread properly in heap of up to 4-5 feet.  

4.     Shade cured garlic bulbs should be stored along with leaves in the form of circular heaps in the ventilated structures. 

5.   Monitor stored bulbs regularly for sprouting and rotting. Rotten and bruised bulbs if any should be removed immediately. Make sure that ventilation is proper.  

B.   Field preparation for kharif onion nursery

It is advised to sow seeds in nursery preferably in 2nd to 4th week of June for kharif onion. Following points may be considered while preparing nursery.

1.     About 0.05 hectare nursery bed area and 5-7 kg seed is needed to get seedlings to transplant in one hectare.

2.     Deep ploughing is recommended for exposing the insect pupae and weed seeds to sunlight.

3.     The debris of previous crops, weeds and stones should be removed before bed preparation.

4.     Apply half ton of well decomposed farmyard manure in 0.05 ha.

5.     Raised bed of 10-15 cm height, 1 m width and length as per convenience need to be prepared.

6.     Application of pre-emergence herbicide pendimethalin @ 0.2 % is recommended to control weeds in nursery.

7.     Seeds should be treated with carbendazim @ 1-2 g/kg seed before sowing to avoid soil born diseases.

8.     Application of Trichoderma viride @ 1250 g/ha is also recommended to manage damping off and raise healthy seedlings.

9.   Seeds should be sown in lines at 50 mm to 75 mm apart. After sowing, the seeds should be covered with fine powdered farmyard manure or compost followed by light watering. Drip or sprinkler irrigation is recommended.

C. Main field preparation for kharif onion (early planting)

1.     Field should be ploughed and disked properly to eliminate debris and soil clods.

2.   Apply FYM 15 t/ha or poultry manure 7.5t/ha or vermicompost 7.5 t/ha at the time of last ploughing and level the field properly prior to bed preparation.

3.     Avoid flat bed where water logging is a problem. Adopt broad bed furrows (BBF) of 15 cm height and 120 cm top width with 45 cm furrow. This will help to drain the excess water through furrow and in reducing Anthracnose disease. BBF method is suitable for drip and sprinkler irrigation.

4.    For drip irrigation, each BBF should have two drip laterals at (16 mm size) 60 cm with inbuilt emitters. Distance between two inbuilt emitters should be around 30-50 cm and discharge flow rate of 4L/hr is advised.

5.     For sprinkler the distance between laterals (20 mm) of micro sprinkler should be 6 m with a discharge rate of 135L/hr.

D. For kharif onion (early crop) transplanting

1.     Avoid over and under aged seedlings for transplanting. Seedlings aged 35-40 days are recommended for kharif onion.

2.    Prior to transplanting, seedlings roots should be dipped in 0.1% Carbendazim + 0.025% Carbosulfan solution for two hours to reduce the incidence of fungal diseases and thrips damage till 30-40 days after transplanting.

3.     At the time of transplanting, one third of the seedlings top should be cut to get good establishment.

4.    Apply basal dose of Nitrogen: Phosphorus: Potash fertilizers @ 25kg: 40kg: 40kg respectively at the time of transplanting. Soil application of Azospirillum and Phospho bacteria at 5kg/ha improve the N and P2O5 availability to the plant.

5.     Need based sulphur fertilizer (basal) equivalent to 30kg S/ha for soil having sulphur level above 15 kg/ha and 45kg S/ha for soil having below15kg/ha also recommended at the time of planting. It is advised to go for soil testing.

6.  Weedicide, Oxyflurofen 23.5% EC @ 1.5-2.0 ml/L or Pendimethalin 30% @ 3.5-4ml/L at the time of transplanting is recommended to manage the weeds till 40 DAT (Days after Transplanting).

7.     The recommended optimum spacing for seeding transplanting is 15 cm between rows and 10 cm between the plants.

8.     Irrigation at the time of transplanting and three days after transplanting is advised for good establishment. Later irrigation be done at 7-10 days interval as per requirement.